Control & Check Valves

In this category you'll find an assortment of both control and check valves. Control valves allow you manage the flow of air from your aquarium air pump. You can divide and control the flow of air between different devices including multiple air stones, sponge filters etc. Check valves are small devices that allow water to flow in one direction only. They contain a flapper or small trap door that prevents water from flowing back into your air pump when a power outage occurs. If your air pump is located below the level of the water in your aquarium be sure to add a check valve to the air line tubing coming from your pump.

When an air pump is installed under the aquarium, a check valve should be used to prevent the siphoning of water into the pump in the event of a power outage. These valves can also be used in CO2 read more ››

The Ista Metal Air Valves (2 Outlet) allow you to control up to 2 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your read more ››

The Ista Metal Air Valves (3 Outlet) allow you to control up to 3 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your read more ››

The Ista Metal Air Valves (4 Outlet) allow you to control up to 4 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your read more ››

The Ista Metal Air Valves (5 Outlet) allow you to control up to 5 different airlines from your air pump. Quickly and easily attach this handy device to the frame of your aquarium and streamline your read more ››

An essential accessory for every air pump. A Check Valve prevents water siphoning from the aquarium which may damage carpet, furniture and air pump or drain aquarium, killing fish or other read more ››

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Mail Order Pet Supplies (or MOPS as we're often referred to) was created in 1996 with the objective of delivering affordable prices to
Tropical Fish Hobbyists! Over the years we have used our warehousing, logistic and electronic capabilities to bring pond, reptile, bird and other pet products
to our customers. Through MOPS - Aquarium Supplies we are offering high-quality, brand name Aquarium products including filters, heaters, pumps, lighting, nutrition and much more for the Tropical Fish Hobbyist.